Re: selecting a column according to a minimum

From: DA Morgan <damorgan_at_x.washington.edu>
Date: Tue, 19 Oct 2004 22:51:42 -0700
Message-ID: <1098251451.735963@yasure>

Serge Rielau wrote:

> Malcolm Dew-Jones wrote:
>

>> Mark Townsend (markbtownsend_at_comcast.net) wrote:
>> : Mikito Harakiri wrote:
>> : > Serge Rielau <srielau_at_ca.ibm.com> wrote in message 
>> news:<2tkf50F20philU1_at_uni-berlin.de>...
>>
>>
>> : >>IBM policy does not allow me - a DB2 engine developer - to install 
>> a : >>competitive product. The reasons for that are obvious: It would 
>> invite : >>lawsuits. Just read the Oracle licencing agreement if you 
>> doubt that.
>> : >
>> : I don't think there's anything in the Oracle Trial License agreement 
>> : that would stop Serge from downloading and trying Oracle Database 
>> 10g. : After all, IBM are a huge Oracle partner, and they have Oracle 
>> software : up the gnu.
>> ...
>> : So I think it's more IBM's own internal policies that stops him from 
>> : doing so
>>
>> Presumably IBM wants to avoid the chance of stealing, or appearing to
>> steal, or being accused of stealing, oracle technology for ibm products.
>>
>> Allowing ibm employees to access oracle to write sql queries and etc 
>> would
>> be fine, but allowing their DB2 development team to access oracle is
>> presumably not fine.
>>

> Correct. The DB2 II development team obviosuly has Oracle installed to
> write and test wrappers.
> Not needing to know I have no access to those machines.
> If I had O10g on my laptop no one would belive me that I don't look at
> the optimizer plans. Plans tell a lot about the optimizer and query
> rewrite. "Reverse engineering"
> If I ran a query on O10g and I run the same query on DB2 I would have a
> hell of a time controlling my tongue (assuming DB2 would be faster ;-)
> "publishing a benchmark without Oracle's consent".
> Lawyers are no fun at all :-(
>
> Cheers
> Serge

If there was even a prayer of DB2 being faster I'd have read it last month in every technical rag that IBM could find in which to place an advertisement so I wouldn't worry too much about that.

And if you think you can reverse engineer the Oracle optimizer by running 10g on a laptop you have been sippin a bit too much. There is a huge difference between using and reverse engineering.

-- 
Daniel A. Morgan
University of Washington
damorgan_at_x.washington.edu
(replace 'x' with 'u' to respond)

Received on Wed Oct 20 2004 - 00:51:42 CDT